﻿using InfoReaderWin8RT.Common;
using InfoReaderWin8RT.Data;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Group Detail Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234229

namespace InfoReaderWin8RT
{
    /// <summary>
    /// A page that displays an overview of a single group, including a preview of the items
    /// within the group.
    /// </summary>
    public sealed partial class DataSourceDetailPage : InfoReaderWin8RT.Common.LayoutAwarePage
    {
        public DataSourceDetailPage()
        {
            this.InitializeComponent();
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            try
            {
                // TODO: Create an appropriate data model for your problem domain to replace the sample data
                var combinedId = (string)navigationParameter;
                string[] combinedIdArray = combinedId.Split(',');

                string categoryId = combinedIdArray[0];
                string datasourceId = combinedIdArray[1];

                var category = MainDataModel.GetGroup(categoryId);
                if (category == null) return;
                var datasource = category.GetDataSource(datasourceId);
                if (datasource == null) return;
                this.DefaultViewModel["Group"] = datasource;
                this.DefaultViewModel["Items"] = datasource.Items;

                // refresh datasource items
                datasource.RefreshItems();
            }
            catch (Exception ex)
            {
                Util.Debug(ex);
            }
        }

        /// <summary>
        /// Invoked when an item is clicked.
        /// </summary>
        /// <param name="sender">The GridView (or ListView when the application is snapped)
        /// displaying the item clicked.</param>
        /// <param name="e">Event data that describes the item clicked.</param>
        void ItemView_ItemClick(object sender, ItemClickEventArgs e)
        {
            // Navigate to the appropriate destination page, configuring the new page
            // by passing required information as a navigation parameter
            var categoryId = ((DisplayDataItem)e.ClickedItem).Group.Category.UniqueId;
            var datasourceId = ((DisplayDataItem)e.ClickedItem).Group.UniqueId;
            var itemId = ((DisplayDataItem)e.ClickedItem).UniqueId;
            string combinedId = categoryId + "," + datasourceId + "," + itemId;

            this.Frame.Navigate(typeof(ItemDetailPage), combinedId);
        }
    }
}
